<ul>
<li><a href="<?php echo base_url();?>user_main/index/list_user">List Users</a></li>
<li ><a href="<?php echo base_url();?>user_main/index/add_user">Add Users</a></li>
<li><a href="<?php echo base_url();?>shiporder_main/index/add_couriers">Add Courier</a></li>
<li><a href="<?php echo base_url();?>shiporder_main/index/list_courier">List Courier</a></li>
</ul>